Table of contents

1. Matter and Measurements4h 29m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 35m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines38m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 46m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

7. Energy, Rate and Equilibrium

Entropy (Simplified)

GOB Chemistry

7. Energy, Rate and Equilibrium

Entropy (Simplified)

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2:59 minutes

Problem 31McMurry - 8th Edition

Textbook Question

Which of the following processes results in an increase in entropy of the system? a. A drop of ink spreading out when it is placed in water b. Steam condensing into drops on windows c. Constructing a building from loose bricks

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Identify the concept of entropy: Entropy is a measure of the disorder or randomness in a system. Processes that increase disorder tend to increase entropy.

Analyze option a: A drop of ink spreading out in water increases the disorder of the system as the ink molecules disperse throughout the water, leading to an increase in entropy.

Analyze option b: Steam condensing into drops on windows decreases the disorder as gas molecules become more ordered in the liquid state, leading to a decrease in entropy.

Analyze option c: Constructing a building from loose bricks decreases the disorder as the bricks are organized into a structured form, leading to a decrease in entropy.

Determine which process results in an increase in entropy: Based on the analysis, option a, where the ink spreads out in water, results in an increase in entropy.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Entropy

Entropy is a measure of the disorder or randomness in a system. In thermodynamics, it quantifies the number of microscopic configurations that correspond to a thermodynamic system's macroscopic state. A higher entropy indicates a greater degree of disorder, while a lower entropy suggests a more ordered state.

Spontaneous Processes

Spontaneous processes are natural occurrences that lead to an increase in the overall entropy of a system and its surroundings. These processes happen without external intervention and typically move from a state of lower entropy to higher entropy, reflecting the second law of thermodynamics.

Phase Changes

Phase changes, such as the transition from liquid to gas or solid to liquid, often involve changes in entropy. For example, when a substance evaporates, it moves from a more ordered liquid state to a less ordered gaseous state, resulting in an increase in entropy. Understanding these changes is crucial for analyzing the entropy changes in various processes.